<script lang="tsx">
import type { PropType, Ref } from 'vue'
import type { FormActionType, FormProps } from '../types/form'
import type { FormSchema } from '../types/form'
import type { ValidationRule } from 'ant-design-vue/lib/form/Form'
import type { TableActionType } from '@/components/Table'
import { defineComponent, computed, unref, toRefs } from 'vue'
import { Form, Col, Divider } from 'ant-design-vue'
import { componentMap } from '../componentMap'
import { BasicHelp } from '@/components/Basic'
import {
  upperFirst,
  isBoolean,
  isFunction,
  isNull,
  cloneDeep,
  getSlot,
} from '@admin/utils'
import { createPlaceholderMessage, setComponentRuleType } from '../helper'
import { useItemLabelWidth } from '../hooks/useLabelWidth'
import { useI18n } from '@admin/locale'

export default defineComponent({
  name: 'BasicFormItem',
  inheritAttrs: false,
  props: {
    schema: {
      type: Object as PropType<FormSchema>,
      default: () => ({}),
    },
    formProps: {
      type: Object as PropType<FormProps>,
      default: () => ({}),
    },
    allDefaultValues: {
      type: Object as PropType<Recordable>,
      default: () => ({}),
    },
    formModel: {
      type: Object as PropType<Recordable>,
      default: () => ({}),
    },
    setFormModel: {
      type: Function as PropType<(key: string, value: any) => void>,
      default: null,
    },
    tableAction: {
      type: Object as PropType<TableActionType>,
    },
    formActionType: {
      type: Object as PropType<FormActionType>,
    },
  },
  setup(props, { slots }) {
    const { t } = useI18n()

    const { schema, formProps } = toRefs(props) as {
      schema: Ref<FormSchema>
      formProps: Ref<FormProps>
    }

    const itemLabelWidthProp = useItemLabelWidth(schema, formProps)

    const getValues = computed(() => {
      const { allDefaultValues, formModel, schema } = props
      const { mergeDynamicData } = props.formProps
      return {
        field: schema.field,
        model: formModel,
        values: {
          ...mergeDynamicData,
          ...allDefaultValues,
          ...formModel,
        } as Recordable,
        schema: schema,
      }
    })

    const getComponentsProps = computed(() => {
      const { schema, tableAction, formModel, formActionType } = props
      let { componentProps = {} } = schema
      if (isFunction(componentProps)) {
        componentProps =
          componentProps({
            schema,
            tableAction,
            formModel,
            formActionType,
          }) ?? {}
      }
      if (schema.component === 'Divider') {
        componentProps = Object.assign({ type: 'horizontal' }, componentProps, {
          orientation: 'left',
          plain: true,
        })
      }
      return componentProps as Recordable
    })

    const getDisable = computed(() => {
      const { disabled: globDisabled } = props.formProps
      const { dynamicDisabled } = props.schema
      const { disabled: itemDisabled = false } = unref(getComponentsProps)
      let disabled = !!globDisabled || itemDisabled
      if (isBoolean(dynamicDisabled)) {
        disabled = dynamicDisabled
      }
      if (isFunction(dynamicDisabled)) {
        disabled = dynamicDisabled(unref(getValues))
      }
      return disabled
    })

    function getShow(): { isShow: boolean; isIfShow: boolean } {
      const { show, ifShow } = props.schema
      const { showAdvancedButton } = props.formProps
      const itemIsAdvanced = showAdvancedButton
        ? isBoolean(props.schema.isAdvanced)
          ? props.schema.isAdvanced
          : true
        : true

      let isShow = true
      let isIfShow = true

      if (isBoolean(show)) {
        isShow = show
      }
      if (isBoolean(ifShow)) {
        isIfShow = ifShow
      }
      if (isFunction(show)) {
        isShow = show(unref(getValues))
      }
      if (isFunction(ifShow)) {
        isIfShow = ifShow(unref(getValues))
      }
      isShow = isShow && itemIsAdvanced
      return { isShow, isIfShow }
    }

    function handleRules(): ValidationRule[] {
      const {
        rules: defRules = [],
        component,
        rulesMessageJoinLabel,
        label,
        dynamicRules,
        required,
      } = props.schema

      if (isFunction(dynamicRules)) {
        return dynamicRules(unref(getValues)) as ValidationRule[]
      }

      let rules: ValidationRule[] = cloneDeep(defRules) as ValidationRule[]
      const { rulesMessageJoinLabel: globalRulesMessageJoinLabel } =
        props.formProps

      const joinLabel = Reflect.has(props.schema, 'rulesMessageJoinLabel')
        ? rulesMessageJoinLabel
        : globalRulesMessageJoinLabel
      const defaultMsg =
        createPlaceholderMessage(component) + `${joinLabel ? label : ''}`

      function validator(rule: any, value: any) {
        const msg = rule.message || defaultMsg
        if (value === undefined || isNull(value)) {
          // 空值
          return Promise.reject(msg)
        } else if (Array.isArray(value) && value.length === 0) {
          // 数组类型
          return Promise.reject(msg)
        } else if (typeof value === 'string' && value.trim() === '') {
          // 空字符串
          return Promise.reject(msg)
        } else if (
          typeof value === 'object' &&
          Reflect.has(value, 'checked') &&
          Reflect.has(value, 'halfChecked') &&
          Array.isArray(value.checked) &&
          Array.isArray(value.halfChecked) &&
          value.checked.length === 0 &&
          value.halfChecked.length === 0
        ) {
          // 非关联选择的tree组件
          return Promise.reject(msg)
        }
        return Promise.resolve()
      }

      const getRequired = isFunction(required)
        ? required(unref(getValues))
        : required

      if ((!rules || rules.length === 0) && getRequired) {
        rules = [{ required: getRequired, validator }]
      }

      const requiredRuleIndex: number = rules.findIndex(
        (rule) =>
          Reflect.has(rule, 'required') && !Reflect.has(rule, 'validator'),
      )

      if (requiredRuleIndex !== -1) {
        const rule = rules[requiredRuleIndex]
        const { isShow } = getShow()
        if (!isShow) {
          rule.required = false
        }
        if (component) {
          if (!Reflect.has(rule, 'type')) {
            rule.type = component === 'InputNumber' ? 'number' : 'string'
          }

          rule.message = rule.message || defaultMsg

          if (component.includes('Input') || component.includes('Textarea')) {
            rule.whitespace = true
          }
          const valueFormat = unref(getComponentsProps)?.valueFormat
          setComponentRuleType(rule, component, valueFormat)
        }
      }

      // Maximum input length rule check
      const characterInx = rules.findIndex((val) => val.max)
      if (characterInx !== -1 && !rules[characterInx].validator) {
        rules[characterInx].message =
          rules[characterInx].message ||
          t('component.form.maxTip', [rules[characterInx].max] as Recordable)
      }
      return rules
    }

    function renderComponent() {
      const {
        renderComponentContent,
        component,
        field,
        changeEvent = 'change',
        valueField,
      } = props.schema

      const isCheck = component && ['Switch', 'Checkbox'].includes(component)

      const eventKey = `on${upperFirst(changeEvent)}`

      const on = {
        [eventKey]: (...args: Nullable<Recordable>[]) => {
          const [e] = args
          if (propsData[eventKey]) {
            propsData[eventKey](...args)
          }
          const target = e ? e.target : null
          const value = target ? (isCheck ? target.checked : target.value) : e
          props.setFormModel(field, value)
        },
      }
      const Comp = componentMap.get(component) as ReturnType<
        typeof defineComponent
      >

      const { autoSetPlaceHolder, size } = props.formProps
      const propsData: Recordable = {
        allowClear: true,
        getPopupContainer: (trigger: Element) => trigger.parentNode,
        size,
        ...unref(getComponentsProps),
        disabled: unref(getDisable),
      }

      const isCreatePlaceholder = !propsData.disabled && autoSetPlaceHolder
      // RangePicker place is an array
      if (isCreatePlaceholder && component !== 'RangePicker' && component) {
        propsData.placeholder =
          unref(getComponentsProps)?.placeholder ||
          createPlaceholderMessage(component)
      }
      propsData.codeField = field
      propsData.formValues = unref(getValues)

      const bindValue: Recordable = {
        [valueField || (isCheck ? 'checked' : 'value')]: props.formModel[field],
      }

      const compAttr: Recordable = {
        ...propsData,
        ...on,
        ...bindValue,
      }

      if (!renderComponentContent) {
        return <Comp {...compAttr} />
      }
      const compSlot = isFunction(renderComponentContent)
        ? { ...renderComponentContent(unref(getValues)) }
        : {
            default: () => renderComponentContent,
          }
      return <Comp {...compAttr}>{compSlot}</Comp>
    }

    function renderLabelHelpMessage() {
      const { label, helpMessage, helpComponentProps, subLabel } = props.schema
      const renderLabel = subLabel ? (
        <span>
          {label} <span class="text-secondary">{subLabel}</span>
        </span>
      ) : (
        label
      )
      const getHelpMessage = isFunction(helpMessage)
        ? helpMessage(unref(getValues))
        : helpMessage
      if (
        !getHelpMessage ||
        (Array.isArray(getHelpMessage) && getHelpMessage.length === 0)
      ) {
        return renderLabel
      }
      return (
        <span>
          {renderLabel}
          <BasicHelp
            placement="top"
            class="mx-1"
            text={getHelpMessage}
            {...helpComponentProps}
          />
        </span>
      )
    }

    function renderItem() {
      const { itemProps, slot, render, field, suffix, component } = props.schema
      const { labelCol, wrapperCol } = unref(itemLabelWidthProp)
      const { colon } = props.formProps

      if (component === 'Divider') {
        return (
          <Col span={24}>
            <Divider {...unref(getComponentsProps)}>
              {renderLabelHelpMessage()}
            </Divider>
          </Col>
        )
      } else {
        const getContent = () => {
          return slot
            ? getSlot(slots, slot, unref(getValues))
            : render
            ? render(unref(getValues))
            : renderComponent()
        }

        const showSuffix = !!suffix
        const getSuffix = isFunction(suffix) ? suffix(unref(getValues)) : suffix

        return (
          <Form.Item
            name={field}
            colon={colon}
            class={{ 'suffix-item': showSuffix }}
            {...(itemProps as Recordable)}
            label={renderLabelHelpMessage()}
            rules={handleRules()}
            labelCol={labelCol}
            wrapperCol={wrapperCol}
          >
            <div style="display:flex">
              <div style="flex:1;">{getContent()}</div>
              {showSuffix && <span class="suffix">{getSuffix}</span>}
            </div>
          </Form.Item>
        )
      }
    }

    return () => {
      const {
        colProps = {},
        colSlot,
        renderColContent,
        component,
      } = props.schema
      if (!componentMap.has(component)) {
        return null
      }

      const { baseColProps = {} } = props.formProps
      const realColProps = { ...baseColProps, ...colProps }
      const { isIfShow, isShow } = getShow()
      const values = unref(getValues)

      const getContent = () => {
        return colSlot
          ? getSlot(slots, colSlot, values)
          : renderColContent
          ? renderColContent(values)
          : renderItem()
      }

      return (
        isIfShow && (
          <Col {...realColProps} v-show={isShow}>
            {getContent()}
          </Col>
        )
      )
    }
  },
})
</script>
